DA7: 9.2 m clear of the highest tide in the London Bridge ledgers

The lowest postcode in DA7, DA7 6SW, stands 9.2 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, DA7 5SD, stands 58 m above it.
- Ground at eight in ten of its postcodes: between 33 m and 58 m, measured from Ordnance Datum; the middle one stands at 51 m.
- None lies in the Environment Agency's Flood Zone 3 from the sea.
- In Bexley.